Enter electrons as $e^{-}.$

Use smallest possible integer coefficients for ALL.reactions. If a box is not needed, leave it blank.

A voltaic cell is constructed in which the following cell reaction occurs. The half$-$cell compartments are connected by a salt bridge.

$B{r}_2(I)+Ni(s)longrightarrow2B{r}^{-}(aq)+N{i}^{2+}(aq)$

The anode reaction is:

$+,+$

The cathode reaction is:

In the external circuit, electrons migrate I the $B{r}^{-}|B{r}_2|$ electrode I the $Ni|N{i}^{2+}|$ electrode.